AR Route Overlay for Industrial Vehicle Obstacle Interference
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Solution Overview
Problem
Existing systems struggle to display whether a predicted route interferes with obstacles in an easily understandable manner, particularly for industrial vehicles like forklifts, due to complexities arising from different viewpoints between augmented reality glasses and vehicle sensors, and issues with three-dimensional obstacle representation.
Innovation Solution
A visibility support system that includes a positioning unit to estimate the vehicle's position, a route prediction unit to calculate interference points, and a display unit worn on the head to superimpose image data on the real world, allowing easy understanding of route interference with obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If AR glasses display virtual objects in a simple manner, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The patent applies dimensionality change by transitioning from simple 2D overlay display to 3D spatial representation. Virtual objects are displayed with depth information and three-dimensional positioning, allowing users to grasp spatial relationships more accurately while maintaining ease of operation through the AR interface.
Solution Approach 2:
The patent introduces an intermediary processing layer that converts sensor data and route information into visually intuitive 3D virtual objects. This intermediary representation layer mediates between the raw data and the user's perception, enabling accurate three-dimensional positional relationship grasping without complicating the display interface.
2Measurement precision
If occlusion is used to represent interference, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses virtual object copying to represent obstacles and routes in the AR display. Instead of requiring complex sensors to physically detect and represent obstacles, the system creates virtual copies of obstacle positions and route trajectories, using occlusion relationships between these virtual objects to indicate interference. This approach achieves accurate interference detection without adding physical sensor complexity.
3Measurement precision
If multiple sensors are attached around the vehicle to recognize surrounding environment, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using a single sensor system (camera or image pickup device) to perform multiple functions: capturing surrounding environment, determining obstacle positions, calculating route trajectories, and generating virtual objects for AR display. This universal sensor approach eliminates the need for multiple specialized sensors and complex viewpoint alignment procedures.
Data Source
AI summary
A visibility support system includes: a positioning unit that estimates a position of an industrial vehicle; a route prediction unit that predicts a route of a part of the industrial vehicle or an object moving together with the industrial vehicle with reference to the position estimated, and calculates an interference position at which an obstacle interferes with the route on the basis of map data containing position information of the obstacle; a display unit configured to be worn on a head of a person, the display unit having transparency and being capable of displaying image data; and a control unit that displays image data of the route such that the image data is superimposed on a position of the route in a real world viewable through the display unit, the route starting from the part or the object at the position estimated and ending at the interference position.